EVM gas price API
EVM gas price API: current gas fees for Ethereum, Base, Polygon, Arbitrum, Optimism, BSC, and Avalanche — node-reported gas price plus EIP-1559 estimates from the last 5 blocks: next base fee and 25th/50th/75th-percentile priority fees, in gwei. Read directly from public JSON-RPC nodes with automatic fallbacks. Use for transaction cost estimation, fee optimization, and timing on-chain actions. Cached up to 15 seconds.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
19 msmedian answer time
$0.002listed price per call
$0.002price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://gateway.stride20k.com/crypto/gas/:chain
| Category | Market data |
|---|---|
| Provider host | gateway.stride20k.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 4 from 3 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.002 | 19 ms |
Example input (from the provider)
{
"method": "GET",
"pathParams": {
"chain": "base"
},
"queryParams": {},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"properties": {
"chain": {
"aliases": {
"1": "ethereum",
"10": "optimism",
"137": "polygon",
"42161": "arbitrum",
"43114": "avalanche",
"56": "bsc",
"8453": "base",
"arb": "arbitrum",
"avax": "avalanche",
"bnb": "bsc",
"eth": "ethereum",
"matic": "polygon",
"op": "optimism"
},
"description": "Chain to query. Shorthands accepted: 1, 10, 56, 137, 8453, 42161, 43114, eth, arb, op, matic, avax, bnb.",
"enum": [
"ethereum",
"base",
"polygon",
"arbitrum",
"optimism",
"bsc",
"avalanche"
],
"missTrack": true,
"normalize": "lower",
"type": "string"
}
},
"required": [
"chain"
],
"type": "object"
},
"queryParams": {
"properties": {},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"blocksSampled": {
"description": "Number of blocks in the fee-history sample.",
"type": "integer"
},
"chain": {
"description": "Chain queried.",
"type": "string"
},
"gasPriceGwei": {
"description": "eth_gasPrice in gwei.",
"type": "number"
},
"gasPriceWei": {
"description": "eth_gasPrice result in wei, as decimal string.",
"type": "string"
},
"nextBaseFeeGwei": {
"description": "Projected next-block base fee in gwei (EIP-1559).",
"type": "number"
},
"priorityFeeGwei": {
"description": "Average priority fee over last 5 blocks at p25/p50/p75, gwei.",
"type": "object"
}
},
"required": [
"chain",
"gasPriceWei",
"gasPriceGwei"
],
"type": "object"
},
"endpoint": {
"description": "Always \"/crypto/gas/:chain\".",
"type": "string"
},
"meta": {
"properties": {
"attribution": {
"description": "Licensing attribution when the source requires it.",
"type": [
"string",
"null"
]
},
"cached": {
"description": "Whether this response was served from cache.",
"type": "boolean"
},
"fetchedAt": {
"description": "ISO 8601 time the data was actually retrieved from the upstream.",
"type": "string"
},
"source": {
"description": "Upstream source: on-chain (PublicNode/dRPC JSON-RPC).",
"type": "string"
}
},
"required": [
"source",
"cached",
"fetchedAt"
],
"type": "object"
},
"ok": {
"description": "true on success.",
"type": "boolean"
}
},
"required": [
"ok",
"endpoint",
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}